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7227928 |
Arrangement for line-testing
This invention generally relates to the arrangements for testing subscriber loops. The invention is based on a solution wherein a test head is behind the high-pass filter of the splitter. In order...
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7209553 |
Cutover method and device for telephone lines
A method for implementing a cutover of a subscriber telephone line from a telephone line of a first exchange to a telephone line of a second exchange, includes the following steps: providing a...
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7151819 |
End-to-end network testing
The invention includes a system and a method for testing a communication network. The inventive method transmits a first signal from a first point to a second point of the communication network,...
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7016475 |
Extendable call agents simulator
A method and associated apparatus for testing telephone system operation. The method comprising connecting a call agent simulator to a network. Call actions or events are applied from the call...
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7010096 |
Remote testing of a communications line
Apparatus and method for remotely measuring characteristics of a communications line ( 4 ) wherein a receiver unit ( 8 ) is connected a remote end of line ( 4 ) between conductors ( 10,12 ) of the...
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6914962 |
Call-flow verification method and apparatus
After implementation of an interactive voice response (IVR) system providing voice prompts (i.e., utterances) to aid a telephone caller, it is desirable to provide call-flow verification to...
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6876726 |
Determining the composition of physical structures from boundary measurements, including the composition of subscriber loops
A method for the direct estimation of configuration parameters defining the make-up of a physical system, such as cable lengths and gauges in the case of telephone subscriber loops, from boundary...
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6826259 |
Method for emulating a terminal and test apparatus for testing a telecommunication network
A method for emulating a terminal for testing a telecommunication network has the terminal being assigned a user interface programmable by a user for executing a communication sequence, the...
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6819744 |
System and circuitry for measuring echoes on subscriber loops
A system for performing broadband differential time domain measurement on a subscriber loop. The system comprises a waveform generator coupled to a sampling head. The sampling head includes...
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6751295 |
Method and apparatus for measuring communication market statistics
Methods and apparatus are provided for determining market statistics for communication service providers. Determinations of whether or not a sampling of telephone numbers are assigned by a...
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6741676 |
Determining the physical structure of subscriber lines
A method determines a structure of a subscriber line. The method includes searching a reference set for a match between the subscriber line and a model line of the reference set and identifying...
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6738455 |
Apparatus and method for testing subscriber lines and equipment
An apparatus and method for testing the connectivity of subscriber terminals more efficiently. A subscriber test controller controls a process of a subscriber test by sending related test...
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6707886 |
Method and system for testing subscriber loops using touchtone telephone signals
A subscriber loop test apparatus relates to the testing of a subscriber loop by the use of a touchtone telephone. The touchstone buttons on a telephone provide Dual-Tone, Multiple Frequencies for...
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6693992 |
Line probe signal and method of use
A system, method, and signal are disclosed for line probing. The invention provides an improved signal for line probing having desirable characteristics. In various embodiments the signal comprises...
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6614879 |
Method and apparatus for intra-bundle signaling
A communications system includes first and second subscriber lines, a first device, and a second device. The first device has a first negotiation unit coupled to the first subscriber line. The...
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6594344 |
Auto latency test tool
A system and method for measuring latency in voice communications is presented. In an exemplary embodiment, latency is measured by establishing a call between a first and a second telephony device,...
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6574335 |
Method for simulating a ring back for a call between parties in different communication networks
A ring back signal for a call between a calling party and a called party can be simulated. A ring back message associated with the call is received. The calling party is associated with a first...
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6516054 |
Method for adjusting current levels, which have been falsified by offset-current levels, in a subscriber line circuit
An adjustment and current-measurement method for a subscriber line circuit of a digital telephone exchange is integrated in the low-voltage section of the subscriber line circuit. A previously...
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6298118 |
System and method for processing of communication line test signals, such as enhancement processing
A communication line tester system and method allows for effective measurement and presentation of communication line characteristics. The communication line tester includes a transmitter, an...
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6292540 |
Battery injection and loop supervision for DSL environment
The invention presented herein is directed to a battery injection and loop supervision (BILS) system and method that can be used in the DSL environment. The BILS of the present invention provides...
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6263047 |
Apparatus and method for characterizing the loading pattern of a telecommunications transmission line
An apparatus and method for characterizing a loading pattern of a twisted pair telecommunications transmission line includes a variable frequency signal generator and a measurement receiver...
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6205202 |
Subscriber line tester
A subscriber line tester for communication lines that convey high speed digital data, wherein a transmission side tester is provided that divides a measuring frequency region into two or more...
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6157704 |
Subscriber line test system for access network
A remote terminal in an access network where a plurality of exchange and subscriber telephone sets are connected, is provided with an incoming call prohibition control unit for transmitting an...
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6049592 |
System for and method of mutually monitoring information guidance units interconnected to telephone lines
A fault monitoring system having a reduced cost and management load. The system includes a voice/facsimile response unit composed of a controller and a network interface. The controller has a...
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6014425 |
Apparatus and method for qualifying telephones and other attached equipment for optimum DSL operation
Apparatus and method are provided for qualifying POTS devices for optimum operation that involve measurements and analysis of the POTS device's impedance over the modem spectrum, noise emanations,...
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5956386 |
Telephone subscriber line diagnostics system and method
A system and method for performing diagnostic leakage impedance testing at the subscriber line interface utilizing portions of existing circuitry designated for driving current on the telephone...
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5910976 |
Method and apparatus for testing customer premises equipment alert signal detectors to determine talkoff and talkdown error rates
A method and apparatus for testing a customer premises equipment (CPE) alert signal detector used to detect the start of a Caller ID data transmission using test CPE alert signals generated by a...
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5901202 |
Method for initiating a telephone call on a remote line
A telephone call on a remote line (190) is initiated by establishing a simultaneous voice and data connection with a slave processor (180) tied to the remote line. The slave processor is responsive...
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5889836 |
Apparatus to prevent unauthorized use of telephone lines
An apparatus comprising a pair of sensors for monitoring the status of a telephone line and a local station which detects unauthorized use and causes actuation of a disruption signal to make the...
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5862200 |
Ground fault detector for T1 span equipment
A ground fault detector for TI span equipment for transmitting signals from a central office to a network interface unit and receiving signals at the central office from the network interface unit....
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5825850 |
Automatic bypass switch for signal conductor
A lightweight, portable, low-power automated bypass device for passing a signal between a first point and a second point on an electrical conductor when an electrical discontinuity exists thereon....
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5825849 |
Loop-back test system using a suppressed ringing connection
The test system of the invention uses suppressed ringing connections from a test unit to the customer premise equipment via the central office to establish connections for performing the loop-back...
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5822398 |
Control of operating states of channel unit installed in performance monitoring capable D4 channel bank
A performance monitoring arrangement conducts auxiliary communications between a performance-monitoring capable line interface unit and one or more performance-monitoring capable channel units of a...
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5822397 |
Audio interface for telecommunications test system
A telecommunication services test system which can be used to automatically interact with automated response units and the like. The test system provides a means to automate test cases for services...
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5764726 |
Telecommunications test system including a test and trouble shooting expert system
A telecommunication test system for a line to be tested includes a test measurement device coupling with the line. The test measurement device determines parameter measurement data from the line. A...
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5633909 |
Apparatus and method for generating calls and testing telephone equipment
A testing system, also known as a call generator, generates telephone calls to test telephone equipment. The call generator includes a processor, a memory for storing processor procedures and test...
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5627474 |
Continuity checker for allocating individual cores of multi-core cables
Proposed is a continuity tester for a plurality of electric conductors. For this purpose, a signal transmitter for admitting different individual identification signals to such conductors is...
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5502756 |
Remote test call unit and service
Reliability of telephone service is increased by providing a test call apparatus configured to launch a test call to a preselected telephone number in response to a call from a remote location...
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5479473 |
Method and apparatus for testing call paths over long distance carrier networks
A remote test site is connected to a maintenance port of a long distance carrier switch. The remote test site is capable of placing calls through the maintenance port of the long distance carrier...
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5450468 |
Method of rapidly assessing damage to outside loop plant
From time-to-time, the telephone outside loop plant is severely damaged as a result of some catastrophe, such as a hurricane. To facilitate the repair and identification of such damage, a facility...
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5448624 |
Telephone network performance monitoring method and system
The present invention automatically initiates a telephone call to a given destination. At the same time, the progress of the call is monitored. The time of a ring back and voice answer received...
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5402073 |
Near-end communications line characteristic measuring system with a voltage sensitive non-linear device disposed at the far end
A method and apparatus (3, 60, 202, 300) for measuring the dynamic, or alternating current, and static, or direct current, characteristics of a cable pair (2, 10, 24, 133) from one end, the local...
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5361293 |
Line/drop testing from a craft terminal using test unit
A subscriber equipment (210) is isolated (238, 234) at a line card (208) in a line shelf (200) and drop testing is conducted over a test-out bus (240) by a test unit (220) connected (236) to the...
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5359646 |
Testing of distributed communications networks
A system and method for testing subscriber's services and sectionalizing service trouble in distributed networks, such as Advanced Intelligent Network (AIN), includes a test call set-up component,...
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5359293 |
Electrical cable arcing fault detection by monitoring power spectrum in distribution line
A system for detecting arcing faults in DC electrical cable power distribution circuits, typically in telecommunications networks, monitors the power spectrum of distribution lines over a frequency...
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5319311 |
Cable fault location method with discharge delay compensation using multiple pulses with different rates of voltage increase
Two or more rising pulse waves having different rates of voltage increase are applied to a measuring end of a cable and reflected waves from a fault point on the cable are detected to measure a...
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5307398 |
Remote controlled tone generator system
A remote controlled tone generator system is provided that permits a telephone technician to remotely control the operating mode of a test tone generator. This allows the technician to install the...
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5222083 |
Call progress monitoring
Method for use in developing, testing, debugging, and/or troubleshooting a call progress monitoring (CPM) detection system which is utilized, for example, by a voice messaging system (VMS). One...
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5073919 |
Automatically testing telephone lines
A method of testing a telephone line including installing a test call unit at an end of the telephone line at which a customer's equipment is connected, automatically initiating a telephone line...
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4943993 |
Cable pair tester
An apparatus adapted for use with a plurality of cable pairs for placing a test condition on a selected cable pair including a cable pair tester and means remote from the cable pair tester for...
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